4-STROKE EXHAUST

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4-Stroke Exhaust4-Stroke Exhaust

4-Stroke Dirt Bike Exhaust

It’s no secret that a properly selected aftermarket exhaust system can do wonders for your dirt bike. There isn’t an easier or faster way to add horsepower throughout your bike’s RPM range. When you want a new dirt bike exhaust system, Rocky Mountain ATV/MC is the best source around. We carry an extensive selection of dirt bike exhausts. Do you love FMF exhausts? So do we. Are you looking for a Yosh exhaust system? We’ve got several. How about a ProCircuit T-4 silencer? We carry it. Do you want a Moto Works exhaust? You’re in the right place. Interested in a Lexx MXe slip-on? Get it here at Rocky Mountain ATV/MC. If you own a 4-stroke dirt bike, a new exhaust system is a must have.

Whether you need a new exhaust system to boost your motocross racing performance or just a good silencer with a USFS-approved spark arrestor for enduro use, Rocky Mountain ATV/MC is the best place to find dirt bike exhaust pipes. We carry all of the leading brands: FMF, Yoshimura, Lexx, Pro Circuit, Motoworks and more. Exhausts are available in a variety of materials as well: titanium, stainless steel, aluminum and even carbon fiber. When you need a 4-stroke exhaust for your motorcycle, you can’t go wrong with these excellent exhaust systems. Whether you’re into motocross or just love a good trail, your dirt bike will really rip with these exhaust systems!

Latest Dirt Bike 4-Stroke Exhaust Reviews – You could win up to $500 for reviewing products!

  • FMF Power Core 4 Hex S/A Silencer (NO CA)

    FMF Power Core 4 Hex S/A Silencer (NO CA)

    Devin in IN

    FMF Powercore 4

    Solid pipe, looks and feels durable out of the box. Pipe sounds great very aggressive, deep and throaty 4-stroke thump. Pretty tame at idle but twist the throttle its a beast. If you ride alot in town or noise sensitive areas may want to consider buying the quiet baffle insert for it but is manageable without it just don't get on it to hard. Only complaint like others have said it is a tight fit to get on because the bolt supplied by FMF is fairly short. I used another stainless bolt from my bolt bin same size just a few threads longer so the bolt will catch the threads on the u-clip on the pipe. Other than that it's a great pipe.

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  • Pro Circuit T-4 S/A Complete Exhaust System

    Pro Circuit T-4 S/A Complete Exhaust System

    Matt in OH

    Waiting to see

    Fit perfect on my sons bike. Between the exhaust, air box and jetting, his bike has defiantly woke up quite a bit. Sounds great without being too loud. Easy install. Gets really hot on the pipe itself, you need a heat shield I used the stock heat shield that I attached with conduit hangers from the hardware store.

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  • Lexx MXe Slip-On Silencer With Mid-Pipe

    Lexx MXe Slip-On Silencer With Mid-Pipe

    Nickolas in CO

    A must have for the traveling trail rider!

    Fit and finish are top notch with this pipe! I travel the US and ride trail and track. This pipe is perfect for BLM land trail riding on Saturday then practice laps on Sunday at track. Getting complements on looks and sound already from "the group". Cant beat the price for a sound very similar to the F#F pipe.

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  • HMF Racing Competition Series Silencer

    HMF Racing Competition Series Silencer

    Dustin in WY

    well worth it

    this is a great,simple to install performance add on with a great sound.

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  • FMF Factory-4.1 RCT Anodized Titanium Silencer with Carbon End Cap

    FMF Factory-4.1 RCT Anodized Titanium Silencer with Carbon End Cap

    kevin in WA

    FMF

    Excellent quality product. Easy installation however also purchase the FMF sring puller, must have. Looks amazing on the bike. The sound makes the bike. You cant compare youtube videos to even come close to the sound this puts out.

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  • FMF Factory-4.1 RCT Aluminum Silencer with Carbon End Cap

    FMF Factory-4.1 RCT Aluminum Silencer with Carbon End Cap

    Danny in CA

    Love it!

    This thing is a beauty! Added power through out.

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